Ecler MAC70v - Manual (Page 7)

7
Thanks to the GAIN (2) control, you can precisely adjust the signal level of an
incoming musical signal to match the level of the music that is playing on air through another
channel. This operation may be performed visually (through the left VU-meter) and acoustically
(through the headphones), successively comparing both signals with the PFL buttons. The Gain
knobs offer an adjustment range of ±20dB.
The tone controls (3-4-5) of channels 1, 2, 3 and AUX have a range of -20 to
+10dB, while channels 4, 5 and 6 range from CUT to +10dB.
4.4. Using the CROSSFADER
The MAC70v provides a short travel sliding potentiometer placed horizontally. This
potentiometer is called CROSSFADER (32) and enables a direct mixing of the signals present at
the inputs. The odd channels 1, 3 and 5 feature a XFA switch with activation indicator, that
assigns this channel to side A of the crossfader. If these switches are not activated, the signal
bypasses the crossfader circuit and passes directly to the main mix bus. An analogue XFB
switch at the even channels 2, 4 and 6 assign these signals to side B of the crossfader or direct
them to the main mix bus.
The MAC70v's CROSSFADER is based around an electronic VCA circuit that greatly
extends its life and additionally has the great advantage of being removable and replaceable by
yourself. To do so, just follow these instructions:
1- Remove the screws of the plate that hold the CROSSFADER.
2- Remove the set from the mixer.
3- Detach the multipin connector.
4- Replace the whole set or remove the screws that tie the potentiometer.
5- Tie the new potentiometer and the associated printed circuit and multipin connector
to the plate.
6- Attach the multipin connector.
7- Place the set on the mixer.
8- Fix the screws of the plate.
4.5. Talkover
This device automatically reduces the signal level just at the first voice "hit" of the DJ
or speaker on the microphone plugged to the channel which is assigned to the Talkover. When
the DJ stops talking the music level comes up to the initial level. The talkover is enabled
through the ON (31) switch, and has efficiency, EFF (34), main signal level attenuation
(between 0 and 30 dB) and recovery time, TIME (33), the time necessary for a progressive
come back to the original level (between 0,1 and 3 sec).
The channel(s) assignable to Talkover are internally selectable, see configuration
diagram. The MAC70v talkover is factory preset at channel 1.
4.6. Outputs
The MAC70v mixer has two independent outputs, OUT1 and OUT2. Each one has its
own volume control, with a sliding fader for OUT1 (28), and a rotary one for the OUT2 (21).
Both outputs have a dedicated balance control BAL (25-20).